EP 1382115 B1 20041013 - AUTOMATIC OPTIMIZATION OF LINEARITY FOR ENVELOPE FEEDBACK RF AMPLIFIER LINEARIZATION
Title (en)
AUTOMATIC OPTIMIZATION OF LINEARITY FOR ENVELOPE FEEDBACK RF AMPLIFIER LINEARIZATION
Title (de)
AUTOMATISCHE OPTIMIERUNG DER LINEARITÄT FÜR EINEN HF-VERSTÄRKER MIT HÜLLKURVENRÜCKOPPLUNG
Title (fr)
OPTIMISATION AUTOMATIQUE DE LINEARITE POUR LINEARISATION D'AMPLIFICATEUR RF A RETROACTION D'ENVELOPPE
Publication
Application
Priority
- EP 0204458 W 20020423
- US 28523901 P 20010423
- US 12534702 A 20020419
Abstract (en)
[origin: WO02087074A2] An amplifier configuration and method of amplifying a signal are provided for automatic optimization of linearity of power amplifier input/output characteristics. The amplifier configuration utilizes a feedback loop that includes detecting envelopes of signals that are input and output from a power amplifier. The amplifier configuration includes an offset parameter determined in a second feedback loop that adapts to values for optimizing the linearity of the power amplifier output when input signal amplitudes are within a predetermined range of small signal values, thereby producing a substantially reduced distortion and thus linearized output over the entire input signal amplitude range.
IPC 1-7
IPC 8 full level
H03F 1/32 (2006.01)
CPC (source: EP US)
H03F 1/3247 (2013.01 - EP US); H03F 2200/102 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02087074 A2 20021031; WO 02087074 A3 20031030; AT E279812 T1 20041015; AU 2002312845 A1 20021105; CN 100340059 C 20070926; CN 1518793 A 20040804; DE 60201593 D1 20041118; EP 1382115 A2 20040121; EP 1382115 B1 20041013; US 2002171484 A1 20021121; US 6593812 B2 20030715
DOCDB simple family (application)
EP 0204458 W 20020423; AT 02737986 T 20020423; AU 2002312845 A 20020423; CN 02812535 A 20020423; DE 60201593 T 20020423; EP 02737986 A 20020423; US 12534702 A 20020419